US Bridges

45530 306 Street over Ck

PoorClosed to traffic

Clay County, South Dakota · 4S & 0.4E Wakonda · Structure no. 000000014033090

Built
1971
54 years old
Condition
Poor
inspected June 2016
Type
Channel Beam
Concrete
Length
36 ft
1 main span
Daily traffic
147
2022 count
Owner
County
County Highway Agency

About this bridge

45530 306 Street over Ck is a concrete channel beam carrying 45530 306 Street over Ck in Clay County, South Dakota. It was built in 1971, so it is 54 years old, older than the South Dakota average of 48.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: closed to all traffic.

It carries about 147 vehicles a day, roughly 3% of them trucks, projected to reach 147 by 2032. The structure is 36 ft (11 m) long and 29 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Carries45530 306 Street
CrossesCk
Location4S & 0.4E Wakonda
RouteCounty Highway 0
Coordinates42.95333, -97.09413
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2016
Inspection intervalevery 24 months
Operating statusClosed to all traffic
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.8 US tons
Inventory rating21.6 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadH 15
Structure length36 ft (11 m)
Longest span35 ft (10.7 m)
Deck width29 ft (8.8 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic147 (2022)
Projected traffic147 by 2032
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$25,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 45530 306 Street over Ck built?

It was built in 1971, making it 54 years old in 2025.

What condition is 45530 306 Street over Ck in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2016.

How much traffic does 45530 306 Street over Ck carry?

About 147 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is 45530 306 Street over Ck?

The structure is 36 ft (11 m) long with a longest span of 35 ft (10.7 m) and a deck 29 ft wide.

Who owns 45530 306 Street over Ck?

It is owned by the County Highway Agency.